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4481 Herbelin (1985 RR)
Classification: Main-belt Asteroid          SPK-ID: 2004481
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2443489318478055 3.5434e-08  
a 2.338956860204822 7.6118e-09 au
q 1.767435249775677 8.5244e-08 au
i 1.489664927203642 3.395e-06 deg
node 87.45746887189384 0.00014388 deg
peri 265.0382145363561 0.00014403 deg
M 253.7235571760839 9.3525e-06 deg
tp 2459386.214755800401
(2021-Jun-20.71475580)
3.5079e-05 TDB
period 1306.567178939266
3.58
6.3781e-06
1.746e-08
d
yr
n .2755311826310112 1.345e-09 deg/d
Q 2.910478470633968 9.4718e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2194  
   data-arc span      24861 days (68.07 yr)  
   first obs. used      1952-05-24  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48795  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:09:39  

Additional Information
 Earth MOID = .762838 au 
 Jupiter MOID = 2.52701 au 
 T_jup = 3.524 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2   n/a MPO381293  
diameter diameter 4.178 km 0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.435   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4481 Herbelin           Discovered 1985 Sept. 14 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
Named in honor of Claude Herbelin (b. 1931), of Neuchâtel, on the occasion of his 65th birthday (1996 Dec. 13). A friend of the discoverer and brother of the discoverer's companion Anne-Marie Malotki, Herbelin is an electrotechnical engineer by profession. He is also an enthusiastic telecommunications specialist (frequency standards, chronometry) and mountain skier and hiker. Citation provided by S. Herbelin and C. Gassmann-Herbelin.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19961026/MPCPages.arcLast Updated: 2003-09-26

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Alternate Designations
 1985 RR = 1953 VL2 = 1977 HO = 1978 TR8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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